Is it expensive to retire in Korea?

I'm curious, could you elaborate on the cost of retiring in Korea? I've heard varying opinions, but I'm specifically interested in understanding the overall financial implications for someone looking to settle down in their golden years. Do retirees in Korea typically face significant expenses, or are there opportunities for cost-effective living? What factors contribute most to the cost of retirement in Korea, and are there any strategies that individuals can adopt to manage their finances more efficiently?